[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fOYCqtFPPTHR8UXG1aPLKIHWW7Bpn4FSTYzhbEv-hdwg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":58},[],"2024-06-30 21:48:46",156751593,[8,9,10,11],"当DM_IN1=1、DM_IN2=1时,直流电机刹车","当DM_IN1=0、DM_IN2=1时,直流电机正转","当DM_IN1=0、DM_IN2=0时,直流电机空挡","当DM_IN1=1、DM_IN2=0时,直流电机反转",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},12,"1cf0fa729e32cc15dd7a4de7c79519f6","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1b542e96b9391de22b8d64a6042424ad.png","嵌入式系统设计","work_34642026","嵌入式系统设计(普本)-第四章作业","关于直流电机的控制端,下列说法正确的有:( )",[21,32,41,49,59,62,71,78,86,91],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],156751589,[25,26,27,28],"0x10","0x08","0x00","0xF7","执行以下语句后,t1的值为: ( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F80b5cfa38a1592617b3a660d263c0ad6.jpg\">","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],156751590,[36,37,38,39],"RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOPD|RCC_APB2Periph_GPIOPF, ENABLE)","RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOF, ENABLE)","RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOF, ENABLE)","RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOF, ENABLE)","根据以下相关引脚配置表,相关初始化语句的打开时钟端口配置正确的是:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7bed008046421db1e3ebee185c155718.jpg\">",{"answer":42,"createTime":5,"id":43,"options":44,"question":48,"source":30,"type":31},[],156751591,[45,27,46,47],"0x25","0xFF","0x24","执行以下语句后,temp的值为:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F79904ca883474c554eb85a853d5a4890.jpg\">",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":58},[],156751592,[53,54,55,56],"图中芯片是串转并芯片","MOTORCT引脚由低电平变为高电平时,D端的数据输出到Q端","MOTORCT引脚由高电平变为低电平时,D端的数据输出到Q端","图中芯片是由D触发器构成的8位锁存器芯片","关于以下芯片图,下列说法正确的有:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcc151dde27ca32052288bb810be11bda.jpg\">",1,{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":58},[],[8,9,10,11],{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":58},[],156751595,[66,67,68,69],"舵机","继电器","步进电机","直流电机","常用控制元件有:( )",{"answer":72,"createTime":5,"id":73,"options":74,"question":77,"source":30,"type":58},[],156751596,[75,28,26,76],"0xEF","0xE7","结合以下电路图及引脚对应表,控制直流电机的引脚为IN1\u002FIN2,欲使直流电机正转,代码中横线可填入的数据是:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb82b7f682d0ab61b8d2b3bb9942ec8a.jpg\">\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6f01541cc6a472c0bcd3657a7b74f01d.jpg\">",{"answer":79,"createTime":5,"id":80,"options":81,"question":84,"source":30,"type":85},[],156751597,[82,83],"正确","错误","答案填写T\u002FF .STM32单片机的引脚的推挽模式可以直接驱动电机.( )",3,{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":30,"type":85},[],156751598,[82,83],"答案填写T\u002FF .舵机通常用于需要精确位置控制的场合,如打印机头的移动或机器人的关节控制.( )",{"answer":92,"createTime":5,"id":93,"options":94,"question":95,"source":30,"type":85},[],156751599,[82,83],"答案填写T\u002FF .步进电机是一种能够将电能转换为角位移的电机,常用于遥控设备中,有反馈信号,确保步进电机能够准确地停在所需的角度上｡( )"]